In the following sequence of reactions the maximum number of atoms present in molecule ‘C’ in one plane is________.
`underset("Cu tube")overset("Red hot") to underset("Anhydrous" AlCl_(3))overset(CH_(3)Cl "(leq.)")to` (A is a lowest molecular weight alkyne).

In the following sequence of reactions the maximum number of atoms present in molecule ‘C’ in one plane is________. A underset("Cu tube")overset("Red hot") to B underset("Anhydrous" AlCl_(3))overset(CH_(3)Cl "(leq.)")to C (A is a lowest molecular weight alkyne).

Identify Z in the following sequence of reactions C_(2)H_(2)_(2) Br underset((ii)NaNH_(2))overset((i)Alc.KOH)toXunderset("Fe tube "873 K)overset("red hot")to Y underset("Anhyd".AlCl_(3)) overset((CH_(3)CO)_(2)"O"//Delta)toZ

CaC_2 overset(H_2O)to A underset(Cu" tube") overset(500^(@) C ) to B underset(AlC_3("anhyd")) overset(CH_3Cl)to C , C in the sequence is

CH-=CHunderset("Heat")overset(("Cu-tubes"))to[A]underset("Anhy.AlCl"_(3))overset(CH_(3)Cl)to[B]underset("Boil")overset("Cl"_(2))to[C]

CH-=CHunderset("Heat")overset(("Cu-tubes"))to[A]underset("Anhy.AlCl"_(3))overset(CH_(3)Cl)to[B]underset("Boil")overset("Cl"_(2))to[C]

CaC_(2)overset(H_(2)O) to A overset("Red hot tube") to B underset(CH_(3)Cl) overset(AlCl_(3))to C , In this sequence B and C are